spinlock.h

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#ifndef __SPINLOCK_H__
#define __SPINLOCK_H__
 
#include "utilities/vsf_utilities.h"
 
typedef int                                 spinlock_t;
typedef vsf_protect_t                       irq_flags_t;
 
#define SPIN_LOCK_INIT()                    (0)
#define spin_lock_init(lock)                do { *lock = 0; } while(0)
#define __spin_lock(lock)                   do { *lock = 1; } while (0)
#define __spin_unlock(lock)                 do { *lock = 0; } while (0)
#define spin_trylock(lock)                  (spin_lock(lock), 1)
#define spin_lock(lock)                     do { vsf_protect_t orig = vsf_protect_int(); __spin_lock(lock); vsf_unprotect_int(orig); } while (0)
#define spin_unlock(lock)                   do { vsf_protect_t orig = vsf_protect_int(); __spin_unlock(lock); vsf_unprotect_int(orig); } while (0)
#define spin_lock_irq(lock)                 do { vsf_disable_interrupt(); __spin_lock(lock); } while(0)
#define spin_unlock_irq(lock)               do { __spin_unlock(lock); vsf_enable_interrupt(); } while(0)
#define spin_lock_irqsave(lock, flags)      do { flags = vsf_protect_int(); __spin_lock(lock); } while(0)
#define spin_unlock_irqrestore(lock, flags) do { __spin_unlock(lock); vsf_unprotect_int(flags); } while(0)
 
#endif      // __SPINLOCK_H__